fix: handle input array for extract_subdomain

Author: hatamiarash7

src/functions/extract_subdomain.cpp

@@ -11,12 +11,23 @@ namespace duckdb
     {
         // Extract the input from the arguments
         auto &input_vector = args.data[0];
-        auto input         = input_vector.GetValue (0).ToString ();
+        auto result_data   = FlatVector::GetData<string_t> (result);
 
-        // Extract the sub-domain using the utility function
-        auto subdomain = netquack::ExtractSubDomain (state, input);
+        for (idx_t i = 0; i < args.size (); i++)
+        {
+            auto input = input_vector.GetValue (i).ToString ();
 
-        result.SetValue (0, Value (subdomain));
+            try
+            {
+                // Extract the subdomain using the utility function
+                auto subdomain = netquack::ExtractSubDomain (state, input);
+                result_data[i] = StringVector::AddString (result, subdomain);
+            }
+            catch (const std::exception &e)
+            {
+                result_data[i] = "Error extracting subdomain: " + std::string (e.what ());
+            }
+        }
     }
 
     namespace netquack

test/sql/extract_subdomain.test

@@ -4,6 +4,9 @@
 
 require netquack
 
+statement ok
+CREATE TABLE uri_list AS SELECT * FROM read_csv('test/data/examples.csv', header=false, columns={'uri': 'VARCHAR'});
+
 query I
 SELECT extract_subdomain('a.example.com');
 ----
@@ -123,3 +126,16 @@ query I
 SELECT extract_subdomain('http:/example.com.ac:443/path');
 ----
 (empty)
+
+query I
+SELECT extract_subdomain(uri) from uri_list;
+----
+(empty)
+(empty)
+(empty)
+a
+(empty)
+(empty)
+(empty)
+a
+(empty)